| Title | Estimation of maximum lake depth from the surrounding topography: towards a regional assessment of the occurrence of taliks below Arctic lakes |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | LeBlanc, A -M ;
Chartrand, J; Smith, S L |
| Source | Geological Survey of Canada, Scientific Presentation 122, 2021, 1 sheet, https://doi.org/10.4095/328242  Open Access |
| Image |  |
| Year | 2021 |
| Publisher | Natural Resources Canada |
| Meeting | Arctic Change 2020 Conference; December 7-10, 2020 |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is related to the following
publications |
| File format | pdf |
| Province | Nunavut |
| NTS | 55J/13; 55K/14; 55K/15; 55K/16; 55N/01; 55N/02; 55N/03; 55O/04; 66A/02; 66A/03; 66A/04; 66A/05; 66A/06; 66A/07; 66B/01; 66B/08; 66B/09; 66B/16; 66G/01; 66G/08; 66H/02; 66H/03; 66H/04; 66H/05; 66H/06; 66H/07;
76E; 76F; 76G; 76H; 76I; 76J; 76K; 76L; 76M; 76N; 76O; 76P; 77A/02; 77A/03; 77A/04; 77A/05; 77A/06; 77A/07; 77B/01; 77B/02; 77B/03; 77B/04; 77B/05; 77B/06; 77B/07; 77B/08 |
| Area | Rankin Inlet; Baker Lake; Kitikmeot; Bathurst Inlet |
| Lat/Long WENS | -93.0833 -91.7500 63.2500 62.7500 |
| Lat/Long WENS | -98.2500 -96.5000 65.5000 64.0000 |
| Lat/Long WENS | -112.0000 -105.5000 68.5000 65.0000 |
| Subjects | surficial geology/geomorphology; environmental geology; hydrogeology; Nature and Environment; Science and Technology; Economics and Industry; permafrost; talik; surface waters; lakes; lake water depths;
topography; groundwater; groundwater flow; groundwater pollution; mining; mine development; transport mechanisms; mine waste products; waste disposal sites; models; statistical analyses; ArcticDEM; Climate change; Mining industry; Digital elevation
data; Geographic data; Geographic information systems; cumulative effects |
| Illustrations | schematic cross-sections; location maps; geoscientific sketch maps; flow charts; diagrams; plots |
| Program | Climate Change
Geoscience Permafrost |
| Released | 2021 04 21 |
| Summary | (Plain Language Summary, not published)
Open taliks, areas of unfrozen ground, are mainly found beneath large and deep lakes that do not freeze to their bottom. Their connection to the regional
groundwater can affect the development of mine projects due to these potential pathways for contaminant transport. This study explores the use of a high-resolution digital elevation model to extract topographical variables surrounding some lakes in
Nunavut to run regional models of maximum lake depth. This step is use subsequently in the assessment of the occurrence of taliks below Arctic lakes in the Kivalliq and Kitikmeot regions of Nunavut. |
| GEOSCAN ID | 328242 |
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